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    SubjectRe: 2.6.9-rc2-mm1 swsusp bug report.

    On Sat, 2004-09-25 at 22:56, William Lee Irwin III wrote:
    > Nigel Cunningham wrote:
    > >> Normal usage; the pattern of pages being freed and allocated inevitably
    > >> leads to fragmentation. The buddy allocator does a good job of
    > >> minimising it, but what is really needed is a run-time defragmenter. I
    > >> saw mention of this recently, but it's probably not that practical to
    > >> implement IMHO.
    > >
    > On Sat, Sep 25, 2004 at 10:22:22PM +1000, Nick Piggin wrote:
    > > Well, by this stage it looks like memory is already pretty well shrunk
    > > as much as it is going to be, which means that even a pretty capable
    > > defragmenter won't be able to do anything.
    > For however useful defragmentation may be to make speculative use of
    > physically or virtually contiguous memory more probable to succeed, it
    > can never be made deterministic or even reliable, not even in pageable
    > kernels (which Linux is not). Fallback to allocations no larger than
    > the kernel's internal allocation unit, potentially in tandem with
    > scatter/gather capabilities, is essential.

    I fully agree. That's why I do it :>



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